My spouse and I have the same email address, how can we both register?

This site was set up to only allow one person per email address. You could consider setting up a free e-mail address for your spouse, with a service like Gmail, or Yahoo mail (for example).

How would I remove myself from this site?

To remove yourself from the site, log in and then click the "My Profile" in the left column below your profile picture. On the page which follows you need to scroll down to the bottom to find the membership cancellation option there.

How do I update my account or profile information?

To change any of your information, login and click the "My Profile" in the left column below your profile picture. On the page which follows you will find options to update your profile info and login details.